You could try this link:

http://www.tbtf.com/archive/1999-01-04.html#s09

or even better

http://www.obliquity.com/cgi-bin/bluemoon.cgi

I'm sure there are mor

--
Cutte
-----------------------------------------------------------------------
Cutter's Profile: http://www.excelforum.com/member.php...nfo&userid=984
View this thread: http://www.excelforum.com/showthread.php?threadid=49411